SIEMENS LOW VOLTAGE ES SERIES LOAD CENTER. FACTORY INSTALLED MAIN BREAKER WITH 12 1-INCH SPACES ALLOWING MAX 24 CIRCUITS. 3-PHASE 4-WIRE SYSTEM RATED 120/240V OR 120/208V (100A) 10KA INTERRUPT. SPECIAL FEATURES ALUMINUM BUS, GRAY TRIM, NEMA TYPE1 ENCLOSURE FOR INDOOR USE.